一般現(xiàn)在時(shí)

　　一．意義

　　表示經(jīng)常發(fā)生的事情、動(dòng)作或存在的狀態(tài)。

　　二. 構(gòu)成及變化

　　1.be動(dòng)詞的變化

　　肯定句：主語(yǔ)+be(am, is, are)+其它。如：I am a boy.我是一個(gè)男孩。

　　否定句：主語(yǔ)+ be + not +其它。如：He is not a worker.他不是工人。

　　一般疑問(wèn)句：Be +主語(yǔ)+其它。 如：-Are you a student?

　　-Yes. I am. / No, I'm not.

　　特殊疑問(wèn)句：疑問(wèn)詞+一般疑問(wèn)句。如：Where is my bike?

　　2. 行為動(dòng)詞的變化

　　當(dāng)主語(yǔ)為第一，二人稱(chēng)及復(fù)數(shù)時(shí)，助動(dòng)詞為do

　　肯定句：主語(yǔ)+動(dòng)詞原形(+其它)。如：We often play basketball after school.

　　否定句：主語(yǔ)+ don't+動(dòng)詞原形(+其它)。如：we don't play basketball after school.

　　一般疑問(wèn)句：Do +主語(yǔ)+動(dòng)詞原形+其它?

　　如：Do you often play basketball after school ?

　　Yes, we do. / No, we don't.

　　特殊疑問(wèn)句：疑問(wèn)詞+以do開(kāi)頭的一般疑問(wèn)句?

　　如： What do you often do after school ?

　　當(dāng)主語(yǔ)為第三人稱(chēng)單數(shù)（簡(jiǎn)稱(chēng)"三單"）時(shí) ,助動(dòng)詞為does

　　肯定句：主語(yǔ)+動(dòng)詞三單形式(+其它)。如： He swims well.

　　否定句：主語(yǔ)+ doesn't+動(dòng)詞原形(+其它)。如：He doesn't swim well.

　　一般疑問(wèn)句：Does +主語(yǔ)+動(dòng)詞原形+其它。

　　如：Does he swim well ? Yes, he does. / No, he doesn't.

　　特殊疑問(wèn)句：疑問(wèn)詞+以does開(kāi)頭的一般疑問(wèn)句?

　　如：How does your father go to work?

　　3. 第三人稱(chēng)單數(shù)的動(dòng)詞變化規(guī)則

　　(1)多數(shù)動(dòng)詞直接加s:  runs  gets  likes  collets  takes  plays  climbs

　　(2)結(jié)尾是s, x, sh, ch, o,前為輔音字母,結(jié)尾加es   watches  teaches  goes  does  washes crosses  mixes  brushes

　　(3)以輔音字母加y: 將y改為i加es   study-studies  fly-flies   carry-carries  cry-cries

　　以元音字母加y: 則直接加s   buys  says

　　時(shí)間標(biāo)志：always , usually , often , sometimes ,everyday等